Grid structure of storage rack

ABSTRACT

Disclosed is a grid structure of a storage rack, and the storage rack has four corner pillars vertically disposed at four corner of the storage rack and edge frames coupled with each other to form a rectangular frame space, and at least one grid disposed in the frame space, and the edge frames and the grid are combined to form a carrying plane for carrying heavy objects, and the grid is formed by first wires and second wires staggered with one another, and the second wires are coupled to the bottom of the first wires. Each second wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape and an aspect ratio falling within a range of 1.5:1˜3.5:1. Therefore, the supporting effect while carrying heavy objects can be improved without increasing the weight of materials.

CROSS-REFERENCE TO RELATED APPLICATIONS

This non-provisional application claims priority under 35 U.S.C. § 119(a) on Patent Application No(s). 105214620 filed in Taiwan, R.O.C. on Sep. 29, 2016, the entire contents of which are hereby incorporated by reference.

FIELD OF THE INVENTION

The present invention relates to the field of a multi-layer storage rack for carrying heavy objects, more particularly to a grid structure of a storage rack, and the structure uses a flat wire to provide the support force required for carrying heavy objects without increasing the total weight.

BACKGROUND OF THE INVENTION 1. Description of the Related Art

In general, the structural design of a conventional combinational storage rack includes a plurality corner pillars disposed at four corners of the storage rack and a plurality of partition layers for dividing the storage rack into a plurality of layers to achieve the effect of maximizing the utility of the storage space to facilitate the classification of objects. Most of such combination storage racks have a plurality of combining holes formed on a surface of each corner pillar, and bolts are used to fix the partition layers with a spacing to the corner pillars, or brackets are used to mount the partition layers to the corner pillars for latching and positioning the partition layers, and such design is very suitable for general DIY users, and the packing volume before assembling can be reduced effectively to lower the shipping cost.

The partition layers are mainly divided into two following two types: (1) a hole plate is formed by punching holes directly on a metal sheet, and such hole plate does not require soldering for fixation, but the support strength is weaker and thus the hole plate is just suitable for storage racks that carry a light load; and (2) a grid board formed by soldering staggered metal wires to form a grid, and the metal wires may be arranged into one, two or even three layers depending on the required support strength, and the grid board is suitable for storage racks that carry different loads. However, such grid board formed by soldering layers of metal wires incurs high manufacturing cost and material cost, and the total weight becomes greater and the greater weight incurs a higher level of difficulty and a higher cost for the transportation. Obviously, the conventional storage racks require improvements.

2. Summary of the Invention

Therefore, it is a primary objective of the present invention to overcome the drawbacks of the prior art by providing a grid structure of a storage rack, wherein metal wires for making the grid structure are manufactured into a flat elliptical shape instead of the traditional shape with a circular cross-section and configured to be corresponsive to the positive force direction while carrying heavy objects, so as to improve the supporting effect and provide a safe using environment to users. In addition, such manufacturing method does not increase the original total weight and can lower the transportation cost and facilitate users to move and assembly the storage rack by themselves.

To achieve the aforementioned objective, the present invention discloses a grid structure of storage rack, wherein the storage rack comprises four corner pillars vertically disposed at four corners of the storage rack respectively, a plurality of edge frames coupled to the corner pillars to form a rectangular frame space, and at least one grid disposed in the frame space, and the edge frames and the grid are combined to form a carrying plane for carrying heavy objects, and the grid is formed by a plurality of first wires and a plurality of second wires staggered with one another, and the first wires are parallelly disposed with a spacing from one another, and the second wires are parallelly disposed with a spacing from one another and at the bottom of the first wires, characterized in that each second wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape and an aspect ratio falling within a range of 1.5:1˜3.5:1, so that the supporting effect of the second wires can be improved while carrying heavy objects without increasing the weight of materials.

In a preferred embodiment, each second wire is a metal solid wire or a metal hollow tube, and the second wire is greater than or equal to the first wire. If the hollow tube is used, a lightweight effect can be achieved to facilitate the transportation and assembling of the product.

In addition, the second wires and the first wires are perpendicular to one another respectively, so that the first wires and the second wires may be staggered into a “

” shaped structure, and the gaps among such structure can be adjusted to change the carrying effect of its use.

In another preferred embodiment of the present invention, the grid structure of a storage rack further comprises a plurality of third wires parallelly disposed with a spacing from one another and at the top of the first wire, so that the first wires are clamped between the second wires and the third wires to provide a better carrying effect. In addition, each third wire may be a metal solid wire or a metal hollow tube as well.

The third wires and the first wires are perpendicular to one another respectively, or the third wires and the second wires are installed symmetrically with respect to one another, or the third wires and the second wires are installed asymmetrically with respect to one another. The overall density can be changed to improve the strength.

It is noteworthy that each third wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape and an aspect ratio falling within a range of 1.5:1˜3.5:1. This range of aspect ratio is obtained after many experiments conducted by the inventor of the present invention. This aspect ratio varies with the diameter of a different wire used. For example, when the second wire with a smaller wire diameter is used, a smaller aspect ratio approximately equal to 1.5:1˜2:1 may be selected; and when the second wire with a larger wire diameter is used, a larger aspect ratio approximately equal to 2:1˜3.5:1 may be selected.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an exploded view of a preferred embodiment of the present invention;

FIG. 2A is a partial sectional view of an assembly of a preferred embodiment of the present invention;

FIG. 2B is a partial sectional view of an assembly of a preferred embodiment of the present invention;

FIG. 3A shows another implementation mode of a second wire of a preferred embodiment of the present invention;

FIG. 3B shows another implementation mode of a second wire of a preferred embodiment of the present invention;

FIG. 4A is a schematic view of a structure of another preferred embodiment of the present invention;

FIG. 4B is a schematic view of a structure of another preferred embodiment of the present invention;

FIG. 5A shows another implementation mode of a preferred embodiment of the present invention; and

FIG. 5B shows another implementation mode of a preferred embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

The above and other objects, features and advantages of this disclosure will become apparent from the following detailed description taken with the accompanying drawings.

With reference to FIGS. 1, 2, and 3 for an exploded view and a partial sectional view of a preferred embodiment of the present invention, and a schematic view of another implementation mode of a second wire of a preferred embodiment of the present invention respectively, the present invention provides a grid structure 1, and a storage rack 2, and the storage rack 2 comprises four corner pillars 21 disposed at four corners of the storage rack 2 respectively and coupled to form a plurality of edge frames 22 with a rectangular frame space, and at least one grid 1 disposed in the frame space, and the edge frames 22 and the grid 1 are combined to form a carrying plane 11 for carrying heavy objects, and the grid is formed by a plurality of first wires 12 and a plurality of second wires 13 staggered with one another, and the first wires 12 are parallelly disposed with a spacing from one another, and the second wires 13 are parallelly disposed with a spacing from one another and at the bottom of the first wires 12, and the second wires 13 and the first wires 12 are perpendicular to one another to show a “

” shaped staggered grid design. Wherein, each second wire 13 is a metal solid wire or a metal hollow tube, and each second wire 13 has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape, and the elliptical shape is formed by stamping or rolling the original circular wire, so that the weight remains unchanged. In addition, actual tests show that the aspect ratio of the sectional shape of the second wire 13 falls within a range of 1.5:1˜3.5:1, and the aspect ratio may be changed according the wire diameter of the second wires 13. For example the second wire 13 with a smaller wire diameter may select an aspect ratio approximately equal to 1.5:1˜2:1, and the second wire 13 with a large wire diameter may select an aspect ratio approximately equal to 2:1˜3.5:1, because the cross-sectional area of a wire with a small wire diameter is also small. If the aspect ratio is too small, then the wire will become too flat or too thin, and too flat and thin wire is inconvenient for the soldering process and unable to improve the strength. Sometimes, the too-small aspect ratio may result in poor effects. Compared with the original wire, tests that the second wires 22 of the special shape will not increase the weight of materials, and the aspect ratio within this range can improve the supporting effect for carrying heavy objects effectively. It is noteworthy that the density after the first wires 12 and the second wires 13 of the present invention are combined is correlated to the supporting strength. The larger the distribution density, the greater the supporting strength. Meanwhile, a larger distribution density indicates a larger consumption of material, and creates a large challenge to the weight and material cost of the product. Therefore, it is a key point to select the distribution density of the wires and adopt different distribution densities for different parts.

With reference to FIG. 4 for a schematic view of a structure of another preferred embodiment of the present invention, the grid structure 1 further comprises a plurality of third wires 14 which is also a metal solid wire or a metal hollow tube, and the third wires 14 are parallelly disposed with a spacing from one another and at the top of the first wire 12, and the third wires 14 and the first wires 12 are perpendicular to one another, so that the first wires 12 are clamped between the second wires 13 and the third wires 14. Like the previous preferred embodiment, each third wire 14 has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape and an aspect ratio falling within a range of 1.5:1˜3.5:1 (for the reasons same as above, and thus the details will not be repeated).

With reference to FIG. 5 for another implementation mode of a preferred embodiment of the present invention, if the grid structure 1 adopts less first wires 12 and second wires 13, then the density of the grid structure will be smaller. To improve the supporting force and strength at both ends, the second wire 13 at the extreme edge and facing the center of the grid structure 1 has another second wire 13, installed with a smaller spacing, so that the edge has two second wires 13 to enhance the strength without adding more first wires 12. Such arrangement has the advantages of saving the material cost and reducing the weight which is advantageous for the application of carrying a smaller load. 

What is claimed is:
 1. A grid structure of a storage rack, and the storage rack comprising four corner pillars vertically disposed at four corners of the storage rack respectively, a plurality of edge frames coupled to one another to form a rectangular frame space and disposed in the frame space, and the edge frames and the grid being combined to form a carrying plane for carrying heavy objects, and the grid being formed by a plurality of first wires and a plurality of second wires staggered with one another, and the first wires being parallelly disposed with a spacing from one another, and the second wires being parallelly disposed with a spacing from one another at the bottom of the first wires, characterized in that each second wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape and an aspect ratio falling within a range of 1.5:1˜3.5:1, so that the supporting effect of the second wires can be improved while carrying heavy objects without increasing the weight of materials.
 2. The grid structure of a storage rack according to claim 1, wherein each second wire is a metal solid wire.
 3. The grid structure of a storage rack according to claim 1, wherein each second wire is a metal hollow tube.
 4. The grid structure of a storage rack according to claim 1, wherein the second wires and the first wires are perpendicular to one another.
 5. The grid structure of a storage rack according to claim 1, further comprising a plurality of third wires parallelly installed with a space from one another on the top of the first wire, such that the first wires is clamped between the second wires and the third wires.
 6. The grid structure of a storage rack according to claim 5, wherein each third wire is a metal solid wire.
 7. The grid structure of a storage rack according to claim 5, wherein each third wire is a metal hollow tube.
 8. The grid structure of a storage rack according to claim 6, wherein the third wires and the first wires are perpendicular to one another respectively.
 9. The grid structure of a storage rack according to claim 7, wherein the third wires and the first wires are perpendicular to one another respectively.
 10. The grid structure of a storage rack according to claim 8, wherein each third wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape, and an aspect ratio falling within a range of 1.5:1˜3.5:1.
 11. The grid structure of a storage rack according to claim 9, wherein each third wire has a sectional shape corresponsive to a positive force direction of the carrying plane and in a flat elliptical shape, and an aspect ratio falling within a range of 1.5:1˜3.5:1. 